Prep the potatoes: Cut the potatoes into 1/4-inch thick sticks.
Mix together the ground beef, steak seasoning, and Worcestershire sauce. Form into even patties. Transfer to a plate, cover with plastic wrap, and reserve in the fridge until you are ready to cook (see note).
Prep vegetables for cheeseburger per instruction above.
Heat the oil to 375 degrees F in a heavy-bottomed pot. Preheat the oven to 200 degrees F.
Mix the salt, garlic powder, and paprika in a bowl and set aside.
Whisk the cornstarch and club soda in a mixing bowl. In batches, dip the potatoes in the batter, allow any excess to drip off, and hold on a wire rack. Repeat with rest of the potatoes.
Fry half the potatoes, stirring occasionally until golden brown and crispy, 6 to 8 minutes. Sprinkle with the seasoning and hold in the oven on a paper towel-lined baking sheet. Repeat with the last batch of potatoes.
Lightly toast the buns in a toaster oven.
Heat a grill on medium heat.
Place the patties onto the grill and cook on both sides, getting a nice crusty char to the desired doneness (see note) using a thermometer. When the burger is 3/4 of the way cooked to your liking, add the cheese and cover with a lid to melt.
Compose the burger: Layer the bun with lettuce, tomato, burger, and onion.
Serve the burger with fries and maple syrup, and soda.